Antivibration device for automobiles.



'110. 881,227. PATENTE) 1111110119011 aanom.:

ANTIVKIBRA'IION DBVICB'FOR. AUTOMOBILES.

APPLIQATION FILED SEPT. 1, 1905.

3 SHEETS-SHEET 1.

.PATENTED MEE.l 1o, 190s.- C. o. DODGE.

ANTIVVIBEATION DEVICE EUR AUTOMOBILES. -APPLIATION EELED SEPT. l. 1905.

3 SHEETS-SHEET 2.

'.No.. 881,225.A PATENTED MAE.- 1O, :1.908.4

`O. O. DODGE.

vANTIVIEEATIOD DEVICE EOE AUTOMOBILES.

APPLICATION 'FILED .SEPTL 1, 1905.

3 SHEETS-SHEET 3.

' zoA tinten series serene orion.,

CHARLES C1. fDOGiil, OF NEWARK, 4NEW JERSEY, ASSIGNOR TO THE DODGE LBRICATOR COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORnTION OF MASSACHUSETTS.

' l' ANTIVBRATION DEVECE .FOR AUTOMOBILES.

No. 881,227. f

Speeieeion ci' Letters Potent.

Patented Mart-h 1o, reoi sppiigun mea september i, 1906". serial No. 275,671,

T o'alt when?. it may concern:

,Be it known that I, CHARLES C. Donors, of Newark, in the county of Essex end Sttte of New Jersey, have invented certain new and useful Improvements in Antivibretion De vices for Automobiles, ofwhich the following is .e speciiicetion.v i

In the development of automobiles or motor eers, much attention has been ps tid to` instrumentelities for reducing vibre'tion and 3er oi the .cer body', and it is generally theA practice et 'this time to employ not only springs loceted between the cer body end t ie axles, but also to employ pneumatic tires Attempts have been mede to utilize soiid rubber tires so as to avoid the danger and expense of punctures, but theA solid rubber is not sufficiently elastic to prevent vibration of the cer body when the vehicle is passing over e rough road.

it is the purpose of the present invention to provide mechanism which may be interposed between the relatively movable parts of e car such the axle and the cer body, for

`limiting or reterding the action of the vehicle springs while permitting them to yield sufficiently to compensate tor inequalities in the road so es to reduce thel vibration of the cer body und also permit of the employment of solid rubber tires, with their corresponding advantages. I huvestated that this device, which forms the subject of the present invent tion, may be ioceted between the axle und the cer'body, but while this .is the preferred arrenge1nentnevertheless it may' be located in any convenient piece where it can eccomplish the functions fff which it is intended.

The device itelf f imprises e. piston end c *linder of which. one may be connected to' it e cer body end the other to the axle so that when the cer body und the exlc move reletively to each other, the piston is moved in one direction or the other to compress air in the cylinderl end retard the notion or destroy the synchronism of the spring und prevent.

'the vibration oi the cer body.

n order to compress theeir in the cylinder to e. suiicient extent tosecure the desi ed result, it,A is necessary to considerebly mulltiply the relative movement of the body en d the axle in its transmission to the piston, end hence the present invention com rises, in addition to the iston and cylinr' er interposed Ybetween seidA relatively nioveble parts or elements, power-trenemitting devlcesby of the invention consist of e twowerind-or bell-crank lever having erins of unequal length, the short erm being connected t0 one of the relatively movable members end :the long crm being connected to the piston, but it is equally ep erent that any meehaiuil equivalent may ie utilized in lieu ofthe seid lever.

On the eccompenying drewings,-Figure 1 represents a. portion of `en automobile equipped with my invention. Fig-s. 2 und 3 represent side elevations of the enti-vibrartion device, showing the piston in different. positions. Fig. 4 represents .en cndolevtion of the seme. F 1g. 5 represents-eJ longitudinel section through the. piston V'end cylinder. Fig. represents-e section onzthe line 6-6 ot' Fig. 5, 'looking in the direction of the arrow. Fig. 7 represents e section on the line 7-7, looking in the direction of the arrow.

Referring to the said drewings,--the body; of the vehicle is indicated as e. whole et l0.

1 l indicates the axle having wheels, 'of which ,5

cated et 13 in consequence of which the body is yieldinglysupported upon the axle, so thtlty the seid axle and body have e relative moveu nicht towards and from enc-h other.

The device of which one form constitutes the embodiments of the present invention comprises e cylinder 14- end a. piston 15.

The piston is illustrated in Fig. 5 es of .the double-cup type, and is connected to thepiston-rod i6. The cylinder heads which are in'-` diczttcd et 17 1S respectively are each pro vided with similar screw-plugs 19 which are upertured to provide escepeports for the air, each plug having e valve 20 for more orless opening or closing the orts tolregula-te the volume of nir thu-tis ex ousted. Tholoylinf der-heed '17 is provided with 'a lplureiity of perforetions constituting en in et port or aperture 21 which is normally closed by e ilep valve 22, securedn place in any oonvenient manner, es by e screw 23. The cylinder-heed 18 has e similar inlet port 24 closed by a iep valve 25, which is epertured tures to receive the pin i580.

scription it will be apparent that when the i to permit the passage of the piston-rod 16 and which is secured in place by a screw' l36 similar to that at The cylinde dread lo is provided with cars or lugs 27 by which it may be secured through the medium of a pin or pintle 28 to a clip Z9 secured to the under side of the car body. Dependiin;r from the cylinder-head i293 is a supportinrbr member or strut which consists of two oppositely-thrcadcd bars 2() el con- .nccted by a turn-buch e 252. The bar or roei :41 is formed at its lower end with a transtwo bell-crank levers, the arms of which are indicated respectivdy at 35 36. rl`he arms 35 are, much longer than the arms 86 iin. the present case being substantially as 3:1. The y ends of the arms 35 are connected by links 37 with the cross-head 38 attached to the end of the piston-rod 16. lhe short arms 36 are pivoted at their ends by a pin 2380 to a clip 39 which is attached in any convenient manner to the axle lll. adjustable with relation to that end is provided with a plurality of aper- Frein this delreferably the arm 36 is the clip and to axle l1 moves upward or downward relal tively to the vehicle body, the bell-crank levers will be moved about the fulcrum pin 34 to move the piston in one direction or the other in the cylinder, the movement of the piston however beingl thrice great as the movement of the axle so that the air will be suiiiciently. compressed during a relatively' slight movement of the axle to ellectually prevent a recurring vibration of the car body and of the vehicle spring.

in actual practice, the parts are so proportioned and adjusted to the vehicle that when the ear has received its complement of passengers, the piston will be midway between the ends of the cylinder. Consequently, passes over a stone and the axle raised, the piston will be moved towards one end of the cylinder, its movement being checked as the air is compressed between it and the i cylinder and havingr one substantially in the event that a. wheel' be opened by reason ofy the parl sense? cylinder4head. {Assuminu that this movement be to the right in lig. 5, the valve 25 l2 will inl vacuum l'ornlcd in lln cylinder lo lh(` lcl' ollhe piston, and air will rush into said cud. 'l`he escape ol" compressed air to the right ol the piston through the leakage duct will he gradual. ln case the wheel should drop into a rut, the piston l5 will be moved to the left and the same results would be obtained as previously described.

it is intended that as many ol these antiwill he imnicdiatcly seated. the valve friction devices may be utilized as is neces sary, as for instance, one tor each vehicle.

` spring.

Having* thus explained the nature ol" the invention, and described a way olf constructing and using the sinne, i lthough without attemptinpr to set lorlh all of the forms in which it maybe made, or all ol the modes of its use, l declare that what lV claim is'f# l. fin apparatus ol' the character referred to, comprisingr a cylinder, a support connected to the cylinder, means by which said support may be adjusted, a piston in the cylinder, bell-cranh levers fulcrumcd on said support :f :id havingr relatively loner and short arms, a rusten. rod. connections between said lonpr artnr and the piston rod,';i.nd means by which the cylinder and the short arms of the bell cranks may be attached tively movable parts of a vehicle.

2. An apparatus oi" the character described, comprisingij clips adapted to be attachcd lo two rclatvely movable parts of a vehicle, a cylinder pivoted to one oi said clips, a two-armed lever lf'ulcrumod on the arm pivoted to the other of said clips, a piston in said cylinder, and a connection between the other arm of said lever and said piston.

3. An apparatus of the character described, comprising:y a cylinder having escape ports, and inlet valves al its ends, a piston in said cylinder, a'piston rod, an elbow lever having arms of' unequal length the longer arm beingr operatively connected -with the piston rod, and means for connectingr the cylinder and the short er arm ol the lever to two relatively movable parts ol a vehicle.

vln testimony whereof l. have aflixed my signature, in presence of two witliesses.

tlliUbES C. DODGE.

'itnesses:

M. l. Mir, (l. (l. Srncnnn.

to two rela- 

